GHK Cu Topical Cream Can GHK Cu Copper Peptide Tighten Skin After Weight Loss? GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu is a powerful copper peptide that supports collagen production, skin and hair health, and tissue repair. It may help reduce fine lines, improve elasticity, and promote faster healing. Want to learn Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms Is GHK Cu Legal? FDA Approved Peptides Neurogan Health